A Caravan

1. A convoy or procession of travelers, their vehicles and cargo, and any pack animals, especially camels crossing a desert.
2. (Britain, Australia, New Zealand, South Africa) A furnished vehicle towed behind a car, etc., and used as a dwelling when stationary.

(convoy or procession of travelers): camel train, convoy, pack train, wagon train

(furnished vehicle used as a dwelling): (US): camper, mobile home, motor home, recreational vehicle, trailer, travel trailer